immune response secondary

immune response secondary
the immune response occurring on the second and subsequent exposures to an antigen; compared to a primary immune response, the lag period is shorter, the peak antibody titer is higher and lasts longer, IgG production predominates, the antibodies produced have a higher affinity for the antigen, and a much smaller dose of the antigen is required to initiate the response. Called also anamnestic r. and booster r.

Medical dictionary. 2011.

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